Outdoor HELP!

So I have a few clones growing outside in 6x6 rockwell cubes. This is my first outdoor grow and I am unsure about a few things. Size of soil pot to use, ratio of foxfarm to perlite, when flowering time is in socal. PLease any advice would be helpful maybe a lil bit of what to expect

a general rule of thumb to start out with is- one gallon per foot of vertical growth (1 gallon pot could support 1 foot plant). Start out with something like 1 part perlite to three parts fox farm